Question

Three identical capacitors are connected in series to a battery. While the capacitors are still connected, a person then mechanically pulls the plates of two of the capacitors further apart, increasing the plate separation for both of them by a factor of 5.3, while leaving the plate separation for the third capacitor unchanged. As a result of this action, the amount of energy stored in the three capacitors has changed by what percent? (If the energy has increased, indicate this with a positive answer; if it has decreased, indicate this with a negative answer.)

Answer 1